TPS not very accurate?

Discussion in 'Mustang S550 General Forums' started by Schwerin, Aug 15, 2019.

  1. Schwerin

    Schwerin Well-Known Member

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    I've noticed my TPS are a good 3psi off vs a good tire Guage. Is this the same for you guys? I have all my tires at 35-36 but the dash shows 32-33psi.
     
  2. jgruben1134

    jgruben1134 Member

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    Set mine all to 33 the day I brought it home. The dash reads 33 for 3 of them, and 32 or 33 for the 4th. Guess I got that one closer to 32.5. Either way, it seems ok to me.
     
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  3. stang-man

    stang-man Well-Known Member

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    Mine reads high by 2-3 psi
     
  4. Cueball

    Cueball Well-Known Member

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    I think it varies. I kept my tires at the required pressure according to the tpms gauge and the first set wore out on the outer edges first - so probably a few psi low. Now I still go by the tpms but add 3 psi.
     
  5. FightingFalcon

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    TMPS Sensors are there to warn in case the pressure drops significantly, not to show precise numbers.

    Get a good gauge for precise numbers.
     
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  6. GJarrett

    GJarrett Well-Known Member

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    Mine are dead on... guess I got lucky
     
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  7. Zrussian13

    Zrussian13 Well-Known Member

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    Mine seem accurate compared to my guage and compressor
     
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  8. jimmerheck

    jimmerheck Well-Known Member

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    two of mine are right on and two of mine are off by 1 psi according to two digital gauges I have, that both match each other.
     
  9. ChromaticGrey

    ChromaticGrey Well-Known Member

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    Mine match my hand gauge.
     
  10. Blue Moon

    Blue Moon Well-Known Member

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    Mine all read within 1 psi of my dial gauge.
     
  11. Mikthehun1

    Mikthehun1 Well-Known Member

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  12. RichBrew

    RichBrew Well-Known Member

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    this is probably the reason the manual specifically states not to use the TMPS as a tire guage. RTFM
     
  13. GT Pony

    GT Pony Well-Known Member

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    Mine all read same as two different tire gauges I've check them against.
     
  14. Monopoly

    Monopoly Well-Known Member

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    Same. Mine read +3psi. Bought a good quality gauge.
     
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